Die-sinking and engraving machine



f J 21, 1931- T J. E. JOHNSON 1,815,204

DIE SINKING AND ENGRAVING MACHINE Filed Sept. 23, 1929 3 Sheets-Sheet 1 172222767: 7 CM y July 21, 1931. E OQNSON 1,815,204 7.

DIE SINKING AND ENGRAVING MACHINE Filed Sept. 23, 1929 3 Sheets-Sheet 2 45 16, pg i 17 M\; I i 4 7% 2s T .52 v a5 27 31 3% i f 13 is 1 1 l I IT' Q Q 3% WW July 21, 193 1.

DIE smxme AND ENGRAVING MACHINE Filedse tl 23, 1929 3 Sheets-Sheet 3 J. E. JOHNSON 1,815,204 1 Patented July 21, 1931 Joan E. JOHN-SON, or Aunoml, rumors nm-smxme AND nnonavrno uncnma Application filed September as, 1929. Serial no. 394,610.

This invention relates to that class of die-sinkin and engraving machines having an upwar ly and downwardly movable toolsupporting member mounted upon and movable with and with respect to a tool-supporting carriage, which'is capable of umve'rsal movement in any and .all directions in a horizontal plane and having means for controlling the fnovement of the tool and carriage, and means for driving the tool.

The rincipal object of the invention is to provide a simple, economical and efiicient die-sinkin and engraving or cutting machine; an more particularly to provide an improved die-sinking and .engraving machine having atool holding member and guiding member or stylus mounted upon and movable upwardly and downwardly with respect to a supporting carriage which is adapted to be'moved universally in any and all directions in a horizontal plane concurrently with the operation of the tool and tool guiding means or stylus, and provided with. means for driving the tool and opcrating the carria e.

Other and furt er objects of the invention will appear from the following descrip- 'tion and claims, and from an inspection of the accompanying drawings which are made a part hereof.

The invention consists of the features, combinations, details of construction and arrangement, and mode of operation of parts as herein described and claimed. In the accompanying drawings, j .Figu

structed in accordance with my invention; Fig. 2 is a view inside elevation of the machln'e shown inFig. 1, with part of the tool-supporting mechanism and work supporting means shown in section;

Fig. 3 is a front view in elevation of the upper part of the machine shown. in Figs. 1and2;and.- v Fig. 4 is an enlarged detail view of the feed screw mechanism for operating the carriage or tool-supporting means in a horizontal plane.

In constructing an improved die-sinking and engraving machine in accordance with frame 1, which is, by preference, provided with an adjustable work=supporting bed 2 mounted thereon.

The Work-supporting bed 2 is sup oi'ted upon and in upwardly and downwardly ad: justable relation to the stationary bed or frame 1, -by means of a forwardly projectingframe or bracket 3, having a Vertical depending frame arm 4 which is adapted to slidably engage the vertical face of an upright guiding frame portion 5 on the stationary frame 1, said upright guiding members 4 and 5 havingtongued and grooved connection with each other. t

Inthe device shown in the drawings, the upright depending frame arm 4 is provided with a'vertically elongated guiding groove 6 which is adapted to admit and shdably engage a corresponding vertical guiding tongue on the adjacent guiding frame memher 5; and an upright bed-supporting feedscrew 7 is mounted in screw-threaded enagement with a rigid supporting socket 8 fixed t0 the bottom portion of the stationary frame 1, the u perend of said screw being seated in a sociiet or bearin 9 on the work supporting bed 2, and provi ed with a hand wheel 10 for operating said screw to raise and lower the work supporting bed 2 with the work 11 and pattern 12 thereon to any Y desired position relatively to the stationary bed or frame 1 and the mechanism supported thereon. re 1 1s a plan view of anrmproved die-s nking and engraving machine con- The work 11 or material to be operated upon, and the pattern 12, are both mounted upon and firmly secured in rigid relation to each other upon the adjustable work supporting bed 2. The usual headed securing bolts 13 are mounted with'thebolt heads in horizontal elongated bayonet slots 14in the flat top surface of said bed 2, the upper ends of said" bolts being adapted to extend through suitable openings in the flanged clamping blocks 15 which are secured bysaid bolts and nuts 16 thereon in rigid clamping engagement with the bottom flange'portions 17, or other suitably formed tionary bed 1; and ball bearings 20 are interposed between the .carriage and said supporting track, and adapted to travel in elongated horizontal grooves in the tracks and parallel horizontal elongated grooves 22 in said tool-supporting'frame or carriage 18. (See Fig. 3.)

A tiltable or rocking tool-supporting frame 23 is tiltably supported upon and movable in a horizontal plane with and with respect to the carriage 18 and adapted to support in operative position and in upwardly and downwardly movable relation to the carriage 18 and the work 11 and pattern 12, a tool 24, which is rotatively supported in suitable bearings in a tool-holder 25 fixed to a tiltable frame arm 26 which is on and forms a part ofthe tiltable frame 23. A guiding stylus 27 is mounted upon a similar upwardly and downwardly movable stylus sup orting frame arm 28 and supported in xed parallel relation to and movable with the tool.

The tiltable tool-supporting frame .arm 26 and. stylus supporting frame arm 28 are fixed to a horizontal rock shaft 29 which forms a part of said tiltable frame 23.

A rigid tiltable tool-supporting and stylussupporting frame 23 isthus provided which comprises a rigidly connected tool-supporting arm 26, stylus-supporting arm 28 and rock shaft or track-rod 29, all of which are tiltably supported upon and. movable in a horizontal plane relatively to the carriage 18, bypreference, as follows:

Rotatively supported upon and carried by the carriage 18 is a pair of circumferentially grooved track-supporting and guiding wheels 30 each of which is, by preference, fixed to a horizontal axle 31,the opposite ends of each of ,aid axles being journaled in bearings 32 on the carria e.

Each of the bearings 32 comprises, by

reference, a pair of upright flanged bearing members 35 and 36, which are rigidly secured to transversely projecting carriage frame members 33 and 34 respectively, by means of bolts 37 which extend through suitable o enings in said bearing members I and the rame members located therebetween, or'other suitable securing means. Each of the-inner bearing members is provided with a central opening through which the axle 31 of the adjacent grooved wheel 30 extends. Each of the outer bearing members 36- is provided with an adjustable screw-threaded end-thrust bearing pin 38 which extends through the central opening in such bearing member 36 and in abutting engagement with the end of the adjacent axle 31. The inner ends of the end-thrust bearing pins 38 are, by preference, conical and adapted to extend into similarly tapered conical end openings in said axle. The bearings 32 with the adjustable end-thrustbearing pins 38 are thus adapted to hold the axles 31 in parallel relation to each other and to hold the corresponding grooved wheels 30 inproperalignment and in position to support and guide the horizontal rocking track-rod 29 and tiltable supporting frame 23 in accurately adjusted and aligned operative position upon the carriage.'

The tool-holder or chuck 25 in which the cutting tool or drill 24 is' operatively'supported. upon the arm 26 of the tool-supporting frame 23 may be of any ordinary, well known or suitable form adapted to rotatively support the cutting tool or drill in operative position during the operation of the machine: For example, an outer splitsleeve or head 40 is rigidly mounted upon and may be formed integrally with the arm 26 on the tiltable tool-supporting frame 23, and is provided with side flanges 41 and 42 having suitable openings into which a clamping bolt 43 is inserted in screw-threaded engagement with one. of said flanges, for clamping the flanged margins of the splitsleeve 01' head 40 together, and for releasing the same. An inner cylindrical sleeve or bushing 42 is mounted in and adapted to be securely clamped and held in operative position by the clamping-sleeve or head 40 and is provided with a vertical axial opening 43 forming a journal bearing in which is rotatively mounted a rotative vertical inner chuck member or spindle 44, the, lower end of which is provided with suitable.

clamping jaws 45 adapted to releasably engage and hold in rigidly clamped operative position the cutting tool or drill 24, which may be of any well known or suitable form for cutting thematerial to be operated upon.

Suitable driving means is provided and mounted upon the tiltable tool-supporting frame, for operating the cutting tool, and comprises, by preference, a belt pulley 45 fixed to the upper projecting end of the rotative tool-supporting spindle 44, and operatively connected with an electric motor 46 which is mounted upon the tiltable frame- 23 and provided with electric wires 47 connected with the opposite poles of the motor and adapted to connect with a suitable source of power. The motor is connected with the tool-supporting spindle 44 by means of a belt pulley 48 fixed to the motor shaft 49; and a belt 50 is mounted upon and adapted to operatively connect said belt pulleys 45' and 48 on the tool-supporting spinstylus in any and all directions as requireddurin the operation of the machine with- .out aifecting or interfering with the operation of the driving mechanism or the means for connecting the cutting tool with the driving mechanism and source of power.

The stylus 27, above mentioned, is in the form of an u right spindle, having a screw threaded main body portion 51 which is mounted in a cylindrical sleeve or bushing 52 having a vertical screw-threaded axial opening adapted to engage and permit the adjustment of the stylus upwardly and downwardly in the bushing, by rotating the stylus in one direction for raising, and in the opposite direction for lowering the. same. The stylus-supporting sleeve or bushing 52 is rigidly secured in operative position in an upright split clamping sleeve or head 53, which is fixed to the outer projecting end of the tiltable frame arm 28. Said splitsleeve has perforated side flanges 54 which are drawn together by a horizontal clamping screw 55, which is mounted in the perforations'in said flanges, the threaded end of the screw being in screw-threaded engagement with one of the flanges and the head in engagement with the other. (See Fig. 1'.)

A head 56 on the upper projecting end of the stylus serves as a convenient means for enabling the operator to turn the stylus to adjust it upward and downward in its support; and a set screw 57 seated in a suitable screw-threaded opening in the stylussupporting sleeve or bushing 52 and in engagement with the stylus serves to firmly secure the latter in any desired adjusted position. i

The axes of the normally upright guiding stylus 27 and'of the normally upright cutting tool 24 and its supporting spindle are parallel; and the stylus and tool thus supported on the same tiltable frame 23, are movable concurrentl in constant arallel relation to each other in any desired direction in a horizontal plane to any desired position while the point ofthe stylus is in engagement with a pattern and the point of the cutting tool is simultaneously in engagement with and adapted to operate upona corresponding part of the die or object to be cut according to such pattern.- The guiding stylus and tool are also adapted to be moved in parallel constant uniform relation to each other upward and downward with the forwardly projecting,

arms of the tiltable horizontally movable tool-supporting frame 23, and simultaneously in any desired direction in a horizontal plane. The guiding stylus and cutting tool are, by pre erence, located at equal distances from the horizontal axis of the tiltable frame 23 and guiding-track rod 29 on which they are mounted; and the'pattern and work are supported in fixed position relatively to each other and at equal distances from the horizontal axis of the tiltable tool-supportin frame 23 and said guiding track rod. tool are so supported upon the tiltable frame that their bottom ends are always in the same horizontal plane relatively to each other and in substantially the same horizontal plane with. the axis of the tiltable frame and guiding track or rod 29 when the cutting tool is in cutting engagement withthe work. The bottom ends of the stylus and cuttin tool are, by preference, of substantially tie same size and contour and the point of the stylus is thus adapted to be moved into and out of contact with the pattern, drawin or design at any desired point, or to he moved into contact with the surface of a pattern to be co ied or duplicated whether the surface is unif iirm'or irregular and varied in contour. And the on, to be moved in any and all directions in a horizontal plane to any desired operative position relatively'to the pattern and work and adapted to enable said tiltable frame to be tilted and'the cutting tooland stylus to be raised and lowered as required with facility and without interfering with the operation of said manually operable means, as follows: i

A horizontal feed screw 58 is rotatably supported at one end is a bearing 59 on an upwardly projecting frame arm 60 on the carriage 18.

Mounted adjacent to and in position to be moved into and out of screw-threaded engagement with the feed screw 58 is a stationary screw-threaded member 61 which is, by preference, in the form of a lever pivotally mounted upon a head- 62 on the upper end of vthe stationary bracket arm 63.

which forms a stationary threaded nut and is adapted to be moved into and out of screw-threaded engagement with the feed he guiding stylus and screw by the movement of the lever upon its axis. The head 62 has a half-round opening 66 opposite the nut 65 through which the feed screw extends. The swinging end of the screw-threaded lever 61 is operatively connected with the pedal 67 for operating said screw-threaded lever 61' to move it into and out of jengagement with the feed screw 58-for moving the carriage 18 lengthwise of the tracks 19.

In the device shownin the accompanying drawings, thepedal 67 is on one of the arms of an oscillating bell-crank lever 68 on the machine frame. An intermediate bell-crank 69 is pivotally supported on the frame 1 by means of a horizontal pivot pin 70. An upright lever arm 71 on the bell-crank 69 is connected with the upright arm 68 of the pedal lever by means of a connecting rod' 72; and a horizontal lever arm 73 on the bell-crank 69. is connected with the stationary threaded feed screw engaging lever 61 by means of an upright connecting rod Fi s.1,2,3and4.) l

74, the upper end of which is provided with forked arms having a connecting pin 7 5 seated therein and extending through a suitable opening in the'end of said lever. (See rotative handle 76 fixed to a stub-shaft journaled in a supporting bearing 77 in the stylus-supporting head 53, already described, is flexibly connected with the rotative feed screw 58 by means of a connecting rod 78 which forms an extension of said feed screw, one end of said'connecting rod being flexibly connected with the adjacent forked frontend of the feed screw by a universal joint 79, and the other end of said connecting rod being connected with the rotative handle 76 and stub-shaft 80 which forms an extension of said handle by means of a un iversal joint 81. The feed screw is thus adapted to be 0 )erated by rotating the feed screw handle 6 in one direction to cause the carriage 18 to move forward on the track 19 on the stationary frame 1, and

in an opposite direction to cause the carriage is adapted to move by the feed screw 58, a toothed rack 82 is flexibly supported at one end upon a projecting frame arm 83 on the carriage 18 and extends through and in slidable engagement with a bearing or socket 84 on the tool-supporting head 40 onthe frame arm 26 of the'tiltable toolsupporting frame 23. A toothedtpinion 85 'is fixed to a horizontal rotative stub-shaft 86 which is journaled in a bearing-87 in the split-sleeve or head 40; and a handle 88 is tool-supporting ibly connected with the feed screw 58 by means of the connecting rod 78 and universal joints, the operator is enabled to rotate the feed screwby means of said handle while the tiltable frame andsaid handle are in any desired position, and concurrently with the movement of the tool the stylus in any direction either upward or downward or horizontally when the machine is in operation. The rotative handle 88 with its rack-engaging pinion 85 being mounted upon the same tiltable frame with the feed screw operating handle 76, the operator is thus enabled tooperate the handle 76 with one hand to cause the carriage to move in either direction on its supporting tracks 19, and to simultaneously operate the handle 88 with his other hand, to cause the tiltable tool-supporting frame to move in either direction at an angle to the direction of movement of the carriage. vious that a machine constructed in accord-- ancewith my invention as above described and shown, and provided with my improved and feeding means, is adapted to enable the operator to cause the cutting tool and stylus or tracer to move concurrently in constant unvarying relation to each other in any and all directions relatively to the stationary work and pattern and with great facility and accuracy.

I claim: l

1. In a mechanism of the class described, the combination of a horizontally movable carriage, means for guiding said carriage in a horizontal plane, alhorizontal longi tudinally movable rocking track rod disposcd at right angles to the path of movement of said. carriage, a tiltable tool-supporting frame supported on and movable with said rocking track rod and adaptedto tilt' upon the horizontal axis of said rod, a pair of grooved supporting wheels journaled in suitable bearings on said-carriage and in supporting engagement with sald rocking track rod, a tool rotatively mounted on said tiltable frame, a guiding stylus supported in fixed relation to said tool for guiding the same, manually operable feedin means operatively connected with said car age and said tiltable tool-supportin frame for moving the same relatively to eac other. means for supporting a pattern and mater al to be operated upon in position to It is, therefore, ob- I i be concurrentl engagedvby said stylus and tool respective y, and driving means on and movable with said carriage and operatively connected with said tool for rotating the same.

2. In a mechanism of the class described, the combination of a horizontally movable carriage, means for guiding said carriage, a tiltable tool-supportlng frame mounted on said carriage and adapted to tilt on a horizontal axis disposed at ri ht angles to the direction of movement 0% the carriage, a tool rotatively mounted on said tiltable frame, a guiding stylus supported on said tiltable frame in fixed relation to said tool and adapted to be moved concurrently with the tool while the stylus is in contact with y a guiding pattern and the cutting tool in contact with material to be operated upon, driving means on and movable with said carriage and connected with said tool for rotating the same, feeding mechanism comprising a feed screw rotatively mounted upon and movable with said carriage, a stationary screw-threaded member in screwthi'eaded engagement with saidscrew and adapted to effect the movement of the carriage when the feed screw is rotated, and a handle rotatively supported on said tiltable tool-supporting frame and operatively connected with said feed screw for rotating the same to effect the movement of the carriage.

3. In a mechanism of the class described, the combination of a horizontally movable carriage, means for guiding said carriage, a tiltable tool-supporting frame mounted upon said carriage and adapted to tilt upon a horizontal axis disposed at right angles to the direction of movement of the carriage, a tool rotatively mounted on said tilt-able frame, a guiding stylus supported on said tiltable frame in fixed relation to said tool and adapted to be moved concurrently with the tool while the stylus is in contact with a guiding pattern and the cutting tool in contact with material to be operated upon, driving means on and movable with said carriage and connected with said tool for 'rov tating the same, feeding mechanism comprising a feed screw rotatively mounted upon and movable with said carriage, 4 a

stationary screw-threaded member in screwthreaded engagement with said screw and adapted to effect themovement of the carriage when the feed screw is rotated, and feeding means supported on the carriage and operatively connected with said tiltable toolsupporting frame and adapted to effect the movement of the same in a direction at right angles to the direction of the path of movement of said'carriage.

4. In a mechanism of the class described,

the combination of a horizontally movable carriage. means for guiding saidcarriaqe, a if an tiltable tool-supportmg frame mounte said carriage and adapted to tilt on a horizontal axis disposed at ri ht angles to the direction of movement of t e carriage, a tool rotatively mounted on said tiltable frame, a guiding stylus supported on said tiltable frame in fixed relation to said tool and adapted to be moved concurrently with the tool while the stylus is in contact with a guiding pattern and the cutting tool in contact with materialto be operated upon, driving means on and movable with said carriage and connected with said tool for rotating the same, feeding mechanism comprisin a feed screw rotatively mounted upon an movable with said carriage, a stationary threaded member in toothed engagement the combination of a horizontally movable carriage, means for guiding said carria e, a tiltable tool-supporting; frame mounte on said carriage and movable in a horizontal plane at an angle to the direction of the path of movement of said carriage, a tool rotativel mounted on and movable u wardly and dz) supporting frame, a" guiding stylus supported in fixed relation to and movable concurrently with said tool, driving means supported on and movable with said carriage and operatively connected with said tool or rotating the same, feeding mechanism operatively connected with saidcarriage and adapted to move the same in a horizontal plane, and feeding mechanism su ported on said carriage comprising a toothe rack flexibly connected with the carriage and a toothed inion rotatively supported on the tiltable ame and ada ted to engage said rack, for' moving the ti table frame in a direction at right angles to the direc ion of movement of the carriage.

6. In a mechanism of the class described,

the combination of a horizontally movable carriage, means for iding said carria e,- a tiltable tool-supporting frame mounte on said carriage and adapted to tilt on ahorizontal axis disposed at ri ht angles to the direction of movement of t e carnage, a tool rotatively mounted on said tiltable frame, a

iding stylus supported on said tiltable ame in fixed relation to said tool and adapted to be moved concurrently with the wnwardly with said tiltab e tooltool while the stylus is in contact with a guiding pattern and the cutting tool in contactwith material to be operated upon, driving means on and movable with said carriage and connected with said tool for rotatingthe same, feeding mechanism comprising a feed screw rotatively mounted upon and movable with said carriage, a stationary threaded member in toothed engagement with said screw and adapted to effect the movement of the carriage when the feed screw is rotated, a handle supported on the tiltable frame, flexible connecting means connected with and forming a flexible connection between said handle and said feed screw and adapted to permit the tilting of the handle with the tiltable frame, feeding means supported on the carriage and operatively connected with the tiltable tool-supporting frame for moving the same at an angle relatively to the direction of movement of the carriage, and stationary supporting means adapted to support a pattern and material to be operated upon in fixed position in engagement with said stylus and tool respectively.

Signed at Chicago, in the county of Cook and State of Illinois, this 6th day of September, 1929.

JOHN E. JOHNSON. 

